a 3d of a male body showcasing three different body types - ectomorph, mesomorph, and endomorph

man 3d body illustration type ectomorph mesomorph endomorph fitness bodybuilding types fat physique anatomy physiology somatotypes health medical science exercise nutrition diet wellness composition scientific visualization metabolism strength training weightlifting muscle mass athletic performance sports endurance cardiovascular bone rehabilitation personal assessment injury prevention medicine human biomechanics monitoring preventive healthcare kinesiology white background european young